Find the cheapest flights from Bangkok to Siem Reap in 2026. Compare airlines, prices by month, and booking tips to save on your trip.
Route: Bangkok (BKK) → Siem Reap (REP)
Distance: Direct flights not available
Flight Duration: 3h 30m – 8h (1 stop)
Prices by Month
| Month | Avg Price | Demand |
|---|---|---|
| January | €320 | high |
| February | €310 | high |
| March | €270 | medium |
| April | €220 | medium |
| May | €170 | low |
| June | €140 | low |
| July | €150 | low |
| August | €145 | low |
| September | €120 | low |
| October | €160 | medium |
| November | €240 | medium |
| December | €380 | high |
Airlines on This Route
- Thai AirAsia (direct): from €80 — Book 2-3 weeks ahead for best prices; Tuesday and Wednesday departures are cheapest. Use AirAsia website directly to avoid booking fees.
- Bangkok Airways (direct): from €180 — Bangkok Airways offers the most comfortable experience on this short route. Their Samui Class includes baggage and meals. Book directly for extra baggage allowance.
- Cambodia Angkor Air (direct): from €120 — National carrier offers good value with baggage included. Check their website for package deals that include airport transfers.
- Thai VietJet Air (direct): from €95 — Often matches AirAsia pricing but check both carriers. Tuesday-Thursday flights typically 10-15% cheaper.
- Vietnam Airlines (connecting): from €200 — Good option if combining with Vietnam itinerary. Hanoi or Ho Chi Minh City layovers. Book 6+ weeks ahead for best connecting fares.
Booking Strategy
For Bangkok to Siem Reap, the shortest international flight in the region makes this a convenient hop. Direct flights at 1h 15m dominate the route, with Thai AirAsia and Cambodia Angkor Air offering the lowest fares. The sweet spot for booking is 3-6 weeks ahead for direct flights, as last-minute fares rarely drop below €80 on this route. September offers the absolute lowest prices (€100-150 return) during the rainy season, while December peaks at €350+. Tuesdays and Wednesdays are consistently cheapest days to fly, with Thursday-Friday being most expensive. Use Skyscanner or Google Flights to compare all carriers, then book directly with the airline to avoid third-party fees. If your dates are flexible, the shoulder months of October and April offer a balance of decent weather and moderate pricing.
Route Tips
- Book Thai AirAsia flights directly on their website or app to avoid the $2-3 booking fee charged by third-party sites
- Siem Reap Airport (REP) has visa-on-arrival for most nationalities – bring a passport photo and $30 USD in cash
- All direct flights depart from Bangkok Suvarnabhumi (BKK), not Don Mueang (DMK) – don’t book flights to the wrong airport
- Consider arriving early morning to beat crowds at Angkor Wat – the temple opens at 5am
- If combining destinations, Cambodian Angkor Air offers good package deals including hotels and temple passes
- Pack light as most budget airlines have tight baggage limits; weigh your bag before arriving at the airport to avoid excess baggage fees
- Download the official Angkor Pass app for temple maps and information – useful for planning multi-day temple visits
Frequently Asked Questions
How long is the flight from Bangkok to Siem Reap?
The direct flight from Bangkok (BKK) to Siem Reap (REP) takes just 1 hour and 15 minutes, making it one of the shortest international flights in Southeast Asia. Connecting flights via Ho Chi Minh City, Hanoi, or Singapore range from 3h 30m to 8h depending on layover duration. Thai AirAsia, Bangkok Airways, Cambodia Angkor Air, and Thai VietJet Air all operate direct services multiple times daily. If you find a connecting fare significantly cheaper, the time spent in transit usually isn’t worth the savings given the short direct option.
How much does it cost to fly from Bangkok to Siem Reap?
Direct flights range from €80-450 depending on season and airline. Thai AirAsia and Thai VietJet Air offer the cheapest direct fares starting around €80-100 one-way when booked in advance. Bangkok Airways costs €150-200 for more comfort and baggage allowance. The most expensive period is December to January during peak tourist season when prices hit €350-450. The cheapest deals appear in September during low season, with return fares sometimes under €120. Budget an additional €30-50 for visa-on-arrival fees if not pre-arranged.
Are there direct flights from Bangkok to Siem Reap?
Yes, multiple airlines operate direct flights between Bangkok and Siem Reap. Thai AirAsia offers the most frequent daily departures (4-5 flights), followed by Cambodia Angkor Air (2-3 flights), Bangkok Airways (2 flights), and Thai VietJet Air (1-2 flights). All direct flights operate from Bangkok’s Suvarnabhumi Airport (BKK) to Siem Reap International Airport (REP). Flight time is just 1h 15m. There is no need to connect unless you’re combining this with another destination in your itinerary.
What is the cheapest month to fly from Bangkok to Siem Reap?
September is the cheapest month to fly from Bangkok to Siem Reap, with average prices around €120-150 for round trips. This coincides with Cambodia’s rainy season, which actually brings fewer tourists to Angkor Wat. May through October constitute the low season, with prices 40-50% below peak season rates. The most expensive months are December and January when European and Australian tourists flood the destination during their winter holidays, with prices averaging €350-400. The shoulder months of April and November offer a reasonable balance between price and weather conditions.
Which airlines fly from Bangkok to Siem Reap?
Four airlines operate direct flights: Thai AirAsia (low-cost, from €80, 15kg bag included), Bangkok Airways (premium, from €180, 30kg bag included, meal service), Cambodia Angkor Air (national carrier, from €120, 20kg bag included), and Thai VietJet Air (low-cost, from €95, 15kg bag included). Connecting options include Vietnam Airlines via Ho Chi Minh City or Hanoi, and Singapore Airlines via Singapore. For pure value, Thai AirAsia typically wins on price. For comfort and baggage, Bangkok Airways offers the best experience on this short sector.
What airport do I fly into in Siem Reap?
You will arrive at Siem Reap International Airport (REP), located about 7 kilometers from the city center. Taxis to downtown cost $5-10 and take 15-20 minutes. Tuk-tuks wait outside arrivals and charge $5-7 for the same journey. Most hotels offer free airport transfers if you book accommodation in advance. The airport is modern and efficient, with visa-on-arrival counters for most nationalities. Allow 30 minutes for immigration at peak times. From the airport, you can easily reach the Old Market area, Pub Street, and all major hotel districts.
How far in advance should I book Bangkok to Siem Reap flights?
For Bangkok to Siem Reap flights, book 3-6 weeks ahead for direct flights to secure the best fares. This route doesn’t benefit much from booking 2+ months in advance as prices don’t follow the typical airline yield management curve closely. Last-minute bookings (within 1 week) rarely offer deals under €80. The exception is during shoulder season (April, October-November) when booking 4-6 weeks ahead yields the best value. If traveling during December-January, book at least 6 weeks ahead as prices rise sharply closer to travel dates.
Is it cheaper to fly from Bangkok to Siem Reap on weekdays?
Yes, flying Tuesday through Thursday is typically 10-20% cheaper than weekend flights on this route. Tuesday is often the cheapest day to fly, with Wednesday a close second. Friday and Sunday departures command premium prices, especially during peak season. A Tuesday-to-Thursday round trip in shoulder season can save you €30-50 compared to a weekend itinerary. The difference is most pronounced on budget carriers like Thai AirAsia and Thai VietJet Air, whose dynamic pricing responds quickly to demand shifts. For the absolute lowest fare, book a Tuesday or Wednesday flight in September.
Data updated: 2026-03
